3v4l.org

run code in 300+ PHP versions simultaneously
<?php $name="why";//声明变量$name,并初始化 function echoName1() { //在函数echoName1()里使用global来声明$name global $name; echo "the first name is ".$name."<br>"; } function echoName2() { //在函数echoName2()里没有使用global来声明$name echo "the second name is ".$name."<br>"; } echoName1(); echoName2(); $last_name = "O'Keefe"; echo $sql = "select * from users where last_name = '" . addslashes($last_name) . "'"; class Person { //下面是人的成员属性 var $name; //人的名子 var $sex; //人的性别 var $age; //人的年龄 //定义一个构造方法参数为属性姓名$name、性别$sex和年龄$age进行赋值 function __construct($name = "", $sex = "", $age = "") { $this->name = $name; $this->sex = $sex; $this->age = $age; } //这个人可以说话的方法, 说出自己的属性 function say() { echo "我的名子叫:" . $this->name . " 性别:" . $this->sex . " 我的年龄是:" . $this->age . "<br>"; } } $p1 = new Person("张三", "男", 20); $p1_string = serialize($p1); //把一个对象串行化,返一个字符串 echo $p1_string . "<br>"; //串行化的字符串我们通常不去解析 $p2 = unserialize('O:6:"Person":3:{s:4:"name";s:4:"张三";s:3:"sex";s:2:"男";s:3:"age";i:20;}'); //把一个串行化的字符串反串行化形成对象$p2 $p2->say();

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0110.00418.55
8.3.50.0080.00922.05
8.3.40.0060.00918.96
8.3.30.0090.00619.07
8.3.20.0000.00720.16
8.3.10.0050.00322.10
8.3.00.0040.00422.48
8.2.180.0070.01118.54
8.2.170.0110.00322.96
8.2.160.0040.01220.89
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0080.00019.36
8.2.110.0090.00022.13
8.2.100.0040.00817.91
8.2.90.0000.00819.08
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0040.00418.04
8.2.50.0050.00518.07
8.2.40.0060.00318.16
8.2.30.0020.00517.95
8.2.20.0060.00317.82
8.2.10.0040.00417.75
8.2.00.0030.00617.68
8.1.280.0040.01125.92
8.1.270.0070.00023.79
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0040.00423.96
8.1.230.0110.00019.04
8.1.220.0000.00817.79
8.1.210.0000.00818.77
8.1.200.0030.00617.36
8.1.190.0040.00417.52
8.1.180.0000.00818.10
8.1.170.0040.00418.59
8.1.160.0040.00421.99
8.1.150.0050.00218.65
8.1.140.0040.00417.51
8.1.130.0070.00017.82
8.1.120.0050.00317.39
8.1.110.0040.00417.36
8.1.100.0030.00517.35
8.1.90.0000.00817.39
8.1.80.0000.00817.46
8.1.70.0000.00717.44
8.1.60.0060.00317.57
8.1.50.0050.00217.45
8.1.40.0020.00517.48
8.1.30.0040.00417.63
8.1.20.0040.00417.66
8.1.10.0040.00417.63
8.1.00.0040.00417.41
8.0.300.0040.00418.77
8.0.290.0040.00417.15
8.0.280.0070.00018.33
8.0.270.0060.00317.33
8.0.260.0000.00716.77
8.0.250.0070.00017.09
8.0.240.0000.00717.03
8.0.230.0000.00717.01
8.0.220.0000.00717.02
8.0.210.0080.00017.03
8.0.200.0080.00017.05
8.0.190.0090.00316.99
8.0.180.0000.00716.97
8.0.170.0000.00816.88
8.0.160.0040.00417.06
8.0.150.0070.00016.98
8.0.140.0040.00416.82
8.0.130.0030.00313.40
8.0.120.0030.00616.94
8.0.110.0000.00716.96
8.0.100.0030.00516.94
8.0.90.0040.00416.77
8.0.80.0130.00317.03
8.0.70.0080.00016.79
8.0.60.0000.00716.82
8.0.50.0000.00816.93
8.0.30.0140.00816.94
8.0.20.0130.00617.44
8.0.10.0040.00417.14
8.0.00.0120.00616.85
7.4.330.0000.00515.00
7.4.320.0000.00716.56
7.4.300.0040.00416.41
7.4.290.0000.00716.51
7.4.280.0070.00016.37
7.4.270.0000.00716.59
7.4.260.0000.00716.62
7.4.250.0030.00516.34
7.4.240.0030.00416.64
7.4.230.0030.00316.36
7.4.220.0070.01016.63
7.4.210.0060.00916.57
7.4.200.0080.00016.62
7.4.190.0000.00816.61
7.4.160.0140.00516.59
7.4.150.0150.00917.40
7.4.140.0130.00417.86
7.4.130.0110.00716.56
7.4.120.0060.01016.51
7.4.110.0130.01016.68
7.4.100.0120.00616.39
7.4.90.0090.00916.55
7.4.80.0120.00619.39
7.4.70.0040.01316.52
7.4.60.0100.00616.52
7.4.50.0050.00316.22
7.4.40.0080.00322.77
7.4.30.0150.00316.59
7.4.00.0100.00615.16
7.3.330.0050.00013.38
7.3.320.0000.00613.26
7.3.310.0000.00716.42
7.3.300.0040.00416.35
7.3.290.0100.01016.38
7.3.280.0090.00816.42
7.3.270.0150.00317.40
7.3.260.0070.01716.48
7.3.250.0050.01416.44
7.3.240.0090.00716.34
7.3.230.0060.00916.45
7.3.210.0100.00616.51
7.3.200.0160.00319.39
7.3.190.0160.00616.48
7.3.180.0080.01316.65
7.3.170.0030.01416.47
7.3.160.0040.01316.47
7.3.120.0060.00914.96
7.3.10.0060.00316.82
7.3.00.0030.01016.69
7.2.330.0060.01216.45
7.2.320.0150.00616.79
7.2.310.0090.00816.66
7.2.300.0070.01416.45
7.2.290.0140.00316.77
7.2.130.0030.01016.87
7.2.120.0040.01116.74
7.2.110.0040.00716.59
7.2.100.0030.01316.96
7.2.90.0030.00917.01
7.2.80.0100.00316.72
7.2.70.0030.01317.02
7.2.60.0060.00516.97
7.2.50.0090.00317.02
7.2.40.0040.00816.71
7.2.30.0120.00617.02
7.2.20.0060.00616.69
7.2.10.0000.01416.91
7.2.00.0040.00716.95
7.1.250.0070.00715.61
7.1.200.0180.00015.50
7.1.70.0060.00617.03
7.1.60.0130.01019.82
7.1.50.0060.00916.85
7.1.00.0030.07722.45
7.0.200.0120.00916.75
7.0.140.0000.07722.13
7.0.60.0130.08019.93
7.0.50.0100.04717.91
7.0.40.0000.05720.24
7.0.30.0230.04720.33
7.0.20.0270.08020.24
7.0.10.0070.08320.12
7.0.00.0070.08320.22
5.6.280.0000.07721.11
5.6.210.0030.06320.48
5.6.200.0030.04318.16
5.6.190.0070.05020.41
5.6.180.0500.04320.51
5.6.170.0200.07720.47
5.6.160.0000.04720.54
5.6.150.0070.03718.15
5.6.140.0100.07718.23
5.6.130.0070.06718.23
5.6.120.0100.03720.98
5.6.110.0030.04020.99
5.6.100.0100.08020.90
5.6.90.0100.06021.00
5.6.80.0000.07320.44
5.5.350.0170.04720.42
5.5.340.0100.07717.95
5.5.330.0130.07720.13
5.5.320.0270.05320.34
5.5.310.0330.03720.34
5.5.300.0030.04318.04
5.5.290.0070.07318.06
5.5.280.0030.04020.90
5.5.270.0100.07020.85
5.5.260.0070.06720.88
5.5.250.0100.06720.69
5.5.240.0000.05720.09
5.4.450.0600.05319.46
5.4.440.0670.05319.57
5.4.430.0070.05719.53
5.4.420.0200.05319.68
5.4.410.0030.06018.95
5.4.400.0170.04718.89
5.4.390.0070.05718.79
5.4.380.0100.05318.76
5.4.370.0170.05018.58
5.4.360.0230.04318.52
5.4.350.0170.05018.61
5.4.340.0170.05018.48
5.4.320.0060.03712.52
5.4.310.0040.03912.52
5.4.300.0060.03612.52
5.4.290.0060.03912.51
5.4.280.0110.03012.38
5.4.270.0040.03812.38
5.4.260.0060.03712.39
5.4.250.0080.03712.39
5.4.240.0080.03412.38
5.4.230.0020.04112.38
5.4.220.0050.03612.37
5.4.210.0060.03412.37
5.4.200.0080.03512.38
5.4.190.0070.03412.37
5.4.180.0020.04112.37
5.4.170.0030.03912.38
5.4.160.0070.03512.38
5.4.150.0080.03812.37
5.4.140.0050.04212.05
5.4.130.0040.04112.04
5.4.120.0060.03512.00
5.4.110.0090.04612.00
5.4.100.0070.03412.00
5.4.90.0050.03712.00
5.4.80.0070.03511.99
5.4.70.0060.03411.99
5.4.60.0080.03111.99
5.4.50.0030.03811.99
5.4.40.0080.03311.98
5.4.30.0060.03511.98
5.4.20.0070.03411.98
5.4.10.0060.03611.98
5.4.00.0060.03611.47
5.3.290.0100.03612.80
5.3.280.0050.03912.71
5.3.270.0030.04512.73
5.3.260.0100.03512.72
5.3.250.0070.03512.72
5.3.240.0110.03212.72
5.3.230.0070.04012.71
5.3.220.0060.03712.68
5.3.210.0060.04712.68
5.3.200.0050.03712.68
5.3.190.0050.03912.68
5.3.180.0030.03912.67
5.3.170.0070.03512.67
5.3.160.0080.03612.67
5.3.150.0040.04112.67
5.3.140.0060.03712.66
5.3.130.0060.03912.66
5.3.120.0060.03912.66
5.3.110.0110.03312.66
5.3.100.0050.03712.12
5.3.90.0080.03412.08
5.3.80.0030.03912.08
5.3.70.0080.03412.07
5.3.60.0030.03912.06
5.3.50.0050.03712.00
5.3.40.0070.03512.00
5.3.30.0070.03511.97
5.3.20.0050.03611.75
5.3.10.0070.03311.70
5.3.00.0040.03711.70
5.2.170.0080.0269.20
5.2.160.0050.0289.20
5.2.150.0030.0359.20
5.2.140.0030.0419.20
5.2.130.0050.0309.15
5.2.120.0050.0289.15
5.2.110.0040.0299.16
5.2.100.0070.0269.16
5.2.90.0020.0329.16
5.2.80.0070.0289.16
5.2.70.0040.0309.16
5.2.60.0020.0339.11
5.2.50.0040.0309.09
5.2.40.0060.0279.06
5.2.30.0030.0319.03
5.2.20.0040.0289.02
5.2.10.0030.0298.93
5.2.00.0040.0308.80
5.1.60.0050.0248.09
5.1.50.0060.0238.09
5.1.40.0020.0298.07
5.1.30.0050.0268.41
5.1.20.0050.0288.43
5.1.10.0040.0268.16
5.1.00.0010.0288.16
5.0.50.0050.0196.64
5.0.40.0030.0206.50
5.0.30.0040.0306.31
5.0.20.0040.0186.28
5.0.10.0030.0206.26
5.0.00.0020.0316.25
4.4.90.0030.0204.78
4.4.80.0020.0154.76
4.4.70.0050.0184.75
4.4.60.0000.0194.75
4.4.50.0030.0154.77
4.4.40.0040.0244.70
4.4.30.0020.0164.76
4.4.20.0030.0164.84
4.4.10.0030.0154.85
4.4.00.0030.0244.76
4.3.110.0040.0154.67
4.3.100.0010.0174.66
4.3.90.0030.0144.64
4.3.80.0020.0314.59
4.3.70.0030.0144.63
4.3.60.0030.0144.63
4.3.50.0020.0164.62
4.3.40.0030.0244.54
4.3.30.0000.0183.30
4.3.20.0050.0133.29
4.3.10.0020.0163.25
4.3.00.0030.0206.76

preferences:
52.7 ms | 400 KiB | 5 Q